<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>Document</title>
  <style>
    
  </style>
</head>
<body>
  <div class="app">
    {{ msg }}
  </div>
</body>
<script src="https://lib.baomitu.com/vue/3.2.47/vue.global.js"></script>
<script>

  const app = Vue.createApp({
    data(){
      return {
        msg:"vue初体验"
      }
    }
  })
  const vm = app.mount(".app");

  console.log(vm);

</script>
</html>